I converted an Excel chart to a PDF file by Save As.. PDF in Excel. It looks good, but there is a lot of whitespace/margin on top and bottom which I need to get rid of. The only way to do so seems to be by using Acrobat professional which I don't have. Is there a free way to do this? I use Windows by the way.

You can get the size right in Excel before saving to PDF - see my answer on superuser, copied below for convenience:

To avoid the "crop the PDF" step mentioned in several answers (on superuser), you can put the chart on its own Worksheet with an appropriate paper size and zero margins. E.g. in Windows Excel 2007:

Select chart, from pop-up menu choose Move Chart... | New Sheet

On the new Chart Sheet, Page Layout | Margins | Custom Margins, and zero all

Resize the chart to the desired size by dragging its bottom-right corner

See the resulting size from Chart Tools | Format | Size

Select a close size from Page Layout | Size, and adjust as necessary

If there is no size close enough, or you want to be exact, you'll need to create a custom page size. Unlike Word, Excel doesn't let you do that itself, but rather uses the size from the printer driver.

Welcome to TeX.SX! Can show an example, please?
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Christian HupferJan 24 at 12:29

This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post - you can always comment on your own posts, and once you have sufficient reputation you will be able to comment on any post.
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MasroorJan 24 at 13:31